I-Powder Metallurgy Gear

Incazelo emfushane:

Lokhu kuphathelene nensimu ekhethekile ye-powder metallurgy, njengoba ukuminyana, i-porosity, izinto zokwakha kanye nezindlela zokwelashwa kokushisa kwama-powder metallurgy gear kuthinta ngqo ubulukhuni namandla. Ubuningi obukhulu bubhekisela kuzinto ze-alloy zobulukhuni obuphakeme, ama-pores amancane, ukuminyana okukhulu, okuhle Izindlela zokwelashwa ezishisayo zivame ukufaka ukuqedwa kwe-carburizing, i-carbonitriding, ukucisha imvamisa ephezulu, ukucima imvamisa ephansi, ukucima uwoyela, njll. Inqubo yokuqina nokufanelekayo yokuqeda ukucindezela kugcina ukuqina kokwelashwa kokushisa kuzinzile.


Imininingwane yomkhiqizo

Amathegi womkhiqizo

Inzuzo enkulu ye-metallurgy yempuphu ukuthi yenziwa ngezinto zempuphu ezi-sintered, ngakho-ke ukugezwa kukawoyela njengoba i-lubricity yinhle kakhulu, ukwakheka kwamazinyo nakho konke osayizi kungakhiwa, imvamisa akuyona enye into eyenziwayo; Okubi wukuthi lokho kuhlobene nokucubungula kwendabuko igiya, amandla awanele, awakwazi ukudlulisa i-torque enkulu, ukunemba kwamazinyo ngokuvamile kusezingeni elingu-6 ~ 9, ukunemba okuyisilinganiso ngokuvamile kuyileveli ephezulu kakhulu ye-IT7 ~ 6.

I-Powder metallurgy ubuchwepheshe obusha bokukhiqiza, obunezinzuzo zayo, ikakhulukazi efanelekile ekukhiqizweni ngobuningi. Kodwa akusikho kuzo zonke izimo.I-Powder metallurgical processing idinga ukwenziwa kwe-die ehambisanayo, kusetshenziswa i-powdery metal ngokusebenzisa ukumanzisa kanye nenqubo ehambisanayo yokwenza izingxenye.Amandla ayahluka ngokuya ngento esetshenzisiwe.

1. iningi lezinsimbi ezilahlayo kanye nezinhlanganisela zazo, ama-alloys amanga, izinto ezinokungena ngaphakathi zingenziwa kuphela nge-powder metallurgy method.

2.ngoba indlela ye-metallurgy yempuphu ingacindezelwa kusayizi wokugcina wokuminyaniswa, ngaphandle kwesidingo esincane noma esincane sokulungiswa kwemishini, kungonga kakhulu insimbi, kunciphise izindleko zomkhiqizo.Ukulahleka kwensimbi ekwenziweni kwemikhiqizo yi-powder metallurgy indlela eyi-1-5% kuphela, ngenkathi ukulahleka kwensimbi ekukhiqizweni kwemikhiqizo ngendlela ejwayelekile yokusakaza kungahle kufike kuma-80%.

3. ngoba inqubo yokusansimbi yempuphu enqubeni yokukhiqiza ayikuncibilikisi okokusebenza, ayesabi ukuxubana nokungcola okulethwe yi-crucible ne-deoxidizer, futhi i-sintering ngokuvamile yenziwa nge-vacuum futhi inciphise umoya, ingesabi i-oxidation , Futhi ngeke inikeze ukungcola kokuqukethwe, kungenzeka ukuthi kwenziwe izinto zokuhlanzeka okuphezulu.

4. indlela yokusansimbi ye-powder ingaqinisekisa ukunemba nokufana kwesilinganiso sokwakheka kwempahla.

5. i-powder metallurgy ilungele ukukhiqizwa kohlobo olufanayo nenani elikhulu lemikhiqizo, ikakhulukazi igiya nezinye izindleko zokucubungula eziphakeme zemikhiqizo, ukukhiqizwa kwensimbi ye-powder kunganciphisa kakhulu ukukhiqizwa kwe-cos.

Ukuqina kokulawulwa kwemikhiqizo yensimbi ejwayelekile ngesikhathi sokwelashwa kokushisa:

Ubuningi be-powder evamile ene-atomised (kufaka phakathi i-carbon steel ne-copper-carbon alloy steel) ingaphezulu kuka-6.9, futhi ukuqina kobunzima kungalawulwa nge-HRC30.

Ngokuvamile, ubukhulu be-powder esetshenzisiwe ngaphambili (i-AB powder) yeqa u-6.95, nobulukhuni bokucima bungalawulwa nge-HRC35.

Ama-powders asetshenzisiwe aphezulu anesisindo esikhulu kuno-6.95 nokucisha ukuqina okulawulwa ku-HRC40.

Imikhiqizo yensimbi ye-Powder eyenziwe ngezinto ezingenhla inokuqina okuzinzile nezinto ezibonakalayo, futhi ubulukhuni ngemuva kokwelashwa kokushisa buhlangabezana nezidingo ezihambisanayo, ngakho-ke amandla abo okuqina namandla acindezelayo azofinyelela phezulu kakhulu.

Ingabe ubunzima bokwelashwa kokushisa kwe-powder metallurgy bungafinyelela ku-45 steel?

Kodwa-ke, ngenxa yokuthi ubukhulu bemikhiqizo ye-PM abuphakeme njengobukaNombolo 45 wensimbi, ukuminyana okuphezulu kakhulu kwezingxenye zokucindezela u-PM kuvame ukuba ngu-7.2 g / cm, kanti ukuminyana kwensimbi engu-45 kungu-7.9 g / cm. we-powder metallurgy noma we-high frequency heat treatment owedlula i-HRC45 kuzokwenza ukuthi imikhiqizo ye-metallurgy brittle ibe namandla ngenxa yokucima okuphezulu, okuholele emandleni emikhiqizo ye-powder metallurgy.

Okulandelayo, sizoqhathanisa igiya elenza i-P / M negiya lokulungisa ngomshini.

1.Izinga eliphakeme lokusetshenziswa kwempahla, lifinyelela ngaphezu kuka-95%

2. Akukho noma ukusika okuncane kuphela okudingekayo

3.Ukuhambisana okuhle kwezingxenye, ukuzinza okuhle nokunemba okuphezulu.

4. Ukuqhathaniswa kwamandla: abakhiqizi be-powder metallurgy abaqeqeshiwe benze ubuhle be-metallurgy mold design, futhi amandla okuqina namandla okucindezela amagiya akhiqizwayo aseduze kwalawo we-gear hobbing.Isibonelo, igiya eliqhutshwa u-gearbox wemoto onokudluliswa okuphezulu umfutho ubuye ube yimpuphu yokusansimbi.Ibonakalayo, i-powder metallurgy gear iyasebenza futhi ibanzi.

5. Powder ngokucindezela udini usebenzisa isikhunta udini, kungaba ukukhiqiza ezinye ahlabayo hobbing ubuchwepheshe abakwazi ukukhiqiza bobunjwa eziyinkimbinkimbi.

6. Ngoba ilungele ukukhiqizwa ngobuningi, ukusebenza kahle kokukhiqiza kuphezulu futhi izindleko ziphansi kunokusika.

7. Kufanelekile ukukhiqizwa ngobuningi, ngakho-ke intengo incintisana ngokuphelele.


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